A HP DC7100 SFF died here. I am sure it's the PS but since it's proprietary (size and connector) it's not readily replaceable. I can't smell anything in it so it might be just a component that needs replacing. I also took one top plate off and couldn't see any fried components but it could be under the board.

I am wondering if anybody knows somebody (or indeed themselves) who could take a look at this with a view towward repair for a small consideration!